I have a 50% citric acid solution (w/v) that i prepared to speed up my process vs weighing out each time I perform test. My question is how can I calculate how much I am actually adding when I pipette 2mLs. I believe I am not adding the same amount as if I were to weigh it out each time. Also, is there much difference if I made a solution on a w/w basis? Thanks
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w/v solution vs w/w solution